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Does Ruby's standard library have a priority queue implementation?
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Priority queue can be implemented using an array, a linked list, a heap data structure, or a binary search tree. Among these data structures, heap data structure provides an efficient implementation of priority queues.
In C++, an internal heap structure is implemented in the priority queue. By default, a max-heap is maintained in the priority queue, which means the highest priority element will be at the top of the priority queue. A min-heap can also be created by simply specifying the suitable Compare function object.
Algorithms: Certain foundational algorithms rely on priority queues, such as Dijkstra's shortest path algorithm, prim's algorithm, and heap sort algorithm, etc.
Priority Queue is an Abstract Data Type (ADT) that holds a collection of elements, it is similar to a normal Queue, the difference is that the elements will be dequeued following a priority order.
Nope, but there's one in Kanwei Li's Algorithms and Containers GSoC 2008 project.
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